Property, Plant and Equipment - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Aug. 31, 2015	Aug. 31, 2014	Aug. 31, 2013
Property, Plant and Equipment [Abstract]
Capital Leased Assets, Gross	$ 222.2	$ 238.8
Capital Leased Assets, Accumulated Amortization	101.3	89.6
Cost to build, estimate	3,000.0
Impairment of Long-Lived Assets to be Disposed of	116.5
Depreciation expense	$ 344.4	$ 292.4	$ 259.3